Liquid fuel burner



1, 1935. E. E. B'EHLER 1,985,970

LIQUID FUEL BURNER Filed Oct. 3, 1932 INVENTOR 1, -....E..1..E.ahissemimsamamsaa I W. C. HopsomGo.;Grand Rapids,

" Application October 3, 19:2,'-'siiar Nb. -63%901' 2 Claims. (Cl. 158- 37) The main objects of this invention are:

First, to provide an improved liquid fuel burner supply and overflow system. r 1

Second, to provide means in a system of this character whereby'air under pressure may be used to blow out and clear the supply or drain pipe in the event of a stoppage therein.

Third, to provide improved means for taking my invention will appear from the description to follow. The invention is defined in the claims.

'A structure which is a preferred embodiment of my invention is illustrated in the accompanying drawing, in which: i

Fig. 1 is a fragmentary. view mainly in side elevation and partially conventionalized, parts.

being broken away and shown in vertical 'section, of a system or apparatus embodying the features of my invention. a

Fig. 2 is an enlarged fragmentary view in side elevation of the supply pipe coupling with a hand pump connected thereto for supplying air under pressure to clear the drain pipe.

Fig. 3 is a similar view of the supply pipe coupling with a hand pump connected thereto for blowing out the burner supply pipe.

In the embodiment of my invention illustrat ed 1 represents a brooder stove or heater provided with a burner 2, considerably conventionalized in the illustration. The fuel is supplied to the feed cup 3 by the feed or supply pipe4 leading from the .fuelsupply tank 5. The pipe 4 has a feed device designated generally by the numeral .6 andincluding a feed regulating valve '7 and a thermostat mechanism designated generally by the numeral 8. The feed device is provided with a sight-window 9 so that the amount of fuel being fed can be determined by inspection, drops of fuel being indicated in the drawing.

The burner is provided with a drain pipe 10 leading to a suitable receptacle at the outside of the brooder house 11, the tank 5 being also arranged on the outside of the brooder house. The drain receptacle is not illustrated.

The feed or supply pipe 4 is connected to the drain pipe10 by means of a by-pass conduit 12. This conduit is connected to the feed pipe 4 by the coupling 13 arranged at the rear of the regulating valve 7 and to the drain pipe 10 by the coupling ,14 arranged in advance of a cutoif valve 20 in the drain pipe. The couplings l3 andl4 have threaded nipples 15 and 16, respectively adapted to-receive the threaded coupling'members 17 of the bypass conduit orthe chuck or coupling 18 of the air pump 19 as shown in Figs. 2 and 3. 4 a

With this arrangement of'parts the feed regulating valve '7 and the thermostat aread= fuel to the burner. However, in the event of the fuel feed pipe'becoming clogged'the fuel will pass through the by-pass 12 to the drain pipe 10, and to clear it the coupling 17 for the bypass to the nipple .13 is disengaged and the pump .19 connected to the nipple .15 of [the coupling 13. The feed pipe ordinarily becomes clogged at or adjacentfthe burner and with this condition the regulating valve 7 is closed and the feed pipe may be freed from obstacles by means of the pump. f I

In the event of clogging the'drainpipe', which ordinarily occurs at the burner end thereof, the regulating valve 7 isclosed and also the drain pipe valve 20, and thecoupling 17 for the by-pass passage to the coupling 14 is disconnected and 'justed to properly control the normal supply of the air pump connected to thenipple 16, and

the obstruction may be blown or discharged from the drain pipe. These operations may be quick 'ly and rapidly performed to remove any obstruc tions and without removing the burner from the heater or the operator having direct access to the burner. This not only results in a great saving ofitime but has a large factor of safety and avoids the spilling of liquid fuel, which is commonly incident to, cleaning systems of this I have illustrated and described my improvements in more or less conventionalized form in an embodiment which I have found highlyprac- .tical.

that this disclosure will enable those skilled in 1. A heating apparatus or systemcomprising' a liquid fuel burner, a gravity fuelfeed pipe for said burner including an upright section, a fuel feed regulating valve adapted to cut off the supprovided with a cut-off valve substantially spaced from the burner, and a by-passconnecply of fuel, a gravity drain pipe for. said burner,

tion from the upright section of said fuel feed pipe to said drain pipe opening to the fuel feed pipe at the rear of said reguprovided'with a cut-off valve substantially lating valve and to said drain pipe in advance of spaced from the burner, and a by-pass conduit its said cut-off valve, the connections for said from the upright section of said fuel feed pipe by-pass to said feed and drain pipes comprising to said drain pipe opening to the fuel feed pipe 5 couplings having threaded nipples adapted to at the rearof said'regulating valve and to said detachably receive couplings for said by-pass drain pipe in advance of its said cut-01f valve, conduit or the chuck of an air pump. .il l the connections for said by-pass to said feed 2. A heating apparatus or system comprising and drain pipes comprising couplings to which a liquid fuel burner, a gravity fuel fedpipe' for "saidby-pass is detachably connected and adapt- 10 said burner including an upright section, afuelfl ed -to .receive meansv for delivering air under feed regulating valve adapted tbcu't off the sup pressure. 1 ply of fuel, a gravity drain pipe 'for said burner EARL E. BEHLER. 

